<span id="cook">loading...</span><br />
<input id="t1" type="text" value=""><br />
<input id="b1" type="button" value="按钮"><br />
=================================================
<script language="javascript">
document.getElementById("cook").innerHTML="测试修改SPAN里的值";
document.getElementById("t1").value="hello你好";
document.getElementById("b1").value="谢谢";
</script>
